]> git.mxchange.org Git - friendica.git/blobdiff - src/Protocol/ActivityPub/Receiver.php
Initialize $permissions variable in ActivityPub\Transmitter::fetchPermissionBlockFrom...
[friendica.git] / src / Protocol / ActivityPub / Receiver.php
index 67e38fcfef2b587f2e1e3555db449a7deaa96440..495e0271d8823afdcde960ae9cd16b4c46bbb1cc 100644 (file)
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2021, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -30,6 +30,7 @@ use Friendica\Core\Protocol;
 use Friendica\Model\Contact;
 use Friendica\Model\APContact;
 use Friendica\Model\Item;
+use Friendica\Model\Post;
 use Friendica\Model\User;
 use Friendica\Protocol\Activity;
 use Friendica\Protocol\ActivityPub;
@@ -67,17 +68,6 @@ class Receiver
        const TARGET_ANSWER = 6;
        const TARGET_GLOBAL = 7;
 
-       /**
-        * Checks if the web request is done for the AP protocol
-        *
-        * @return bool is it AP?
-        */
-       public static function isRequest()
-       {
-               return stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/activity+json') ||
-                       stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/ld+json');
-       }
-
        /**
         * Checks incoming message from the inbox
         *
@@ -99,15 +89,23 @@ class Receiver
                $actor = JsonLD::fetchElement($ldactivity, 'as:actor', '@id');
 
                $apcontact = APContact::getByURL($actor);
-               if (!empty($apcontact) && ($apcontact['type'] == 'Application') && ($apcontact['nick'] == 'relay')) {
+               if (empty($apcontact)) {
+                       Logger::notice('Unable to retrieve AP contact for actor - message is discarded', ['actor' => $actor]);
+                       return;
+               } elseif ($apcontact['type'] == 'Application' && $apcontact['nick'] == 'relay') {
                        self::processRelayPost($ldactivity, $actor);
                        return;
+               } else {
+                       APContact::unmarkForArchival($apcontact);
                }
 
                $http_signer = HTTPSignature::getSigner($body, $header);
-               if (empty($http_signer)) {
+               if ($http_signer === false) {
                        Logger::warning('Invalid HTTP signature, message will be discarded.');
                        return;
+               } elseif (empty($http_signer)) {
+                       Logger::info('Signer is a tombstone. The message will be discarded, the signer account is deleted.');
+                       return;
                } else {
                        Logger::info('Valid HTTP signature', ['signer' => $http_signer]);
                }
@@ -119,28 +117,28 @@ class Receiver
                if (LDSignature::isSigned($activity)) {
                        $ld_signer = LDSignature::getSigner($activity);
                        if (empty($ld_signer)) {
-                               Logger::log('Invalid JSON-LD signature from ' . $actor, Logger::DEBUG);
+                               Logger::info('Invalid JSON-LD signature from ' . $actor);
                        } elseif ($ld_signer != $http_signer) {
                                $signer[] = $ld_signer;
                        }
                        if (!empty($ld_signer && ($actor == $http_signer))) {
-                               Logger::log('The HTTP and the JSON-LD signature belong to ' . $ld_signer, Logger::DEBUG);
+                               Logger::info('The HTTP and the JSON-LD signature belong to ' . $ld_signer);
                                $trust_source = true;
                        } elseif (!empty($ld_signer)) {
-                               Logger::log('JSON-LD signature is signed by ' . $ld_signer, Logger::DEBUG);
+                               Logger::info('JSON-LD signature is signed by ' . $ld_signer);
                                $trust_source = true;
                        } elseif ($actor == $http_signer) {
-                               Logger::log('Bad JSON-LD signature, but HTTP signer fits the actor.', Logger::DEBUG);
+                               Logger::info('Bad JSON-LD signature, but HTTP signer fits the actor.');
                                $trust_source = true;
                        } else {
-                               Logger::log('Invalid JSON-LD signature and the HTTP signer is different.', Logger::DEBUG);
+                               Logger::info('Invalid JSON-LD signature and the HTTP signer is different.');
                                $trust_source = false;
                        }
                } elseif ($actor == $http_signer) {
-                       Logger::log('Trusting post without JSON-LD signature, The actor fits the HTTP signer.', Logger::DEBUG);
+                       Logger::info('Trusting post without JSON-LD signature, The actor fits the HTTP signer.');
                        $trust_source = true;
                } else {
-                       Logger::log('No JSON-LD signature, different actor.', Logger::DEBUG);
+                       Logger::info('No JSON-LD signature, different actor.');
                        $trust_source = false;
                }
 
@@ -173,6 +171,17 @@ class Receiver
                        return;
                }
 
+               $contact = Contact::getByURL($actor);
+               if (empty($contact)) {
+                       Logger::info('Relay contact not found', ['actor' => $actor]);
+                       return;
+               }
+
+               if (!in_array($contact['rel'], [Contact::SHARING, Contact::FRIEND])) {
+                       Logger::notice('Relay is no sharer', ['actor' => $actor]);
+                       return;
+               }
+
                Logger::info('Got relayed message id', ['id' => $object_id]);
 
                $item_id = Item::searchByLink($object_id);
@@ -215,13 +224,14 @@ class Receiver
                        }
                }
 
-               if (Item::exists(['uri' => $object_id, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT]])) {
+               if (Post::exists(['uri' => $object_id, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT]])) {
                        // We just assume "note" since it doesn't make a difference for the further processing
                        return 'as:Note';
                }
 
                $profile = APContact::getByURL($object_id);
                if (!empty($profile['type'])) {
+                       APContact::unmarkForArchival($profile);
                        return 'as:' . $profile['type'];
                }
 
@@ -300,7 +310,7 @@ class Receiver
 
                $object_id = JsonLD::fetchElement($activity, 'as:object', '@id');
                if (empty($object_id)) {
-                       Logger::log('No object found', Logger::DEBUG);
+                       Logger::info('No object found');
                        return [];
                }
 
@@ -312,11 +322,12 @@ class Receiver
                $object_type = self::fetchObjectType($activity, $object_id, $uid);
 
                // Fetch the content only on activities where this matters
-               if (in_array($type, ['as:Create', 'as:Update', 'as:Announce'])) {
+               // We can receive "#emojiReaction" when fetching content from Hubzilla systems
+               if (in_array($type, ['as:Create', 'as:Update', 'as:Announce']) || strpos($type, '#emojiReaction')) {
                        // Always fetch on "Announce"
                        $object_data = self::fetchObject($object_id, $activity['as:object'], $trust_source && ($type != 'as:Announce'), $uid);
                        if (empty($object_data)) {
-                               Logger::log("Object data couldn't be processed", Logger::DEBUG);
+                               Logger::info("Object data couldn't be processed");
                                return [];
                        }
 
@@ -342,6 +353,7 @@ class Receiver
                        $object_data['author'] = JsonLD::fetchElement($activity, 'as:actor', '@id');
                        $object_data['object_id'] = $object_id;
                        $object_data['object_type'] = ''; // Since we don't fetch the object, we don't know the type
+                       $object_data['push'] = $push;
                } elseif (in_array($type, ['as:Add'])) {
                        $object_data = [];
                        $object_data['id'] = JsonLD::fetchElement($activity, '@id');
@@ -349,6 +361,7 @@ class Receiver
                        $object_data['object_id'] = JsonLD::fetchElement($activity, 'as:object', '@id');
                        $object_data['object_type'] = JsonLD::fetchElement($activity['as:object'], '@type');
                        $object_data['object_content'] = JsonLD::fetchElement($activity['as:object'], 'as:content', '@type');
+                       $object_data['push'] = $push;
                } else {
                        $object_data = [];
                        $object_data['id'] = JsonLD::fetchElement($activity, '@id');
@@ -356,6 +369,7 @@ class Receiver
                        $object_data['object_actor'] = JsonLD::fetchElement($activity['as:object'], 'as:actor', '@id');
                        $object_data['object_object'] = JsonLD::fetchElement($activity['as:object'], 'as:object');
                        $object_data['object_type'] = JsonLD::fetchElement($activity['as:object'], '@type');
+                       $object_data['push'] = $push;
 
                        // An Undo is done on the object of an object, so we need that type as well
                        if (($type == 'as:Undo') && !empty($object_data['object_object'])) {
@@ -387,7 +401,7 @@ class Receiver
                        }
                }
 
-               Logger::log('Processing ' . $object_data['type'] . ' ' . $object_data['object_type'] . ' ' . $object_data['id'], Logger::DEBUG);
+               Logger::info('Processing ' . $object_data['type'] . ' ' . $object_data['object_type'] . ' ' . $object_data['id']);
 
                return $object_data;
        }
@@ -477,7 +491,7 @@ class Receiver
                if (!empty($activity['from-relay'])) {
                        $object_data['from-relay'] = $activity['from-relay'];
                }
-               
+
                switch ($type) {
                        case 'as:Create':
                                if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
@@ -501,7 +515,7 @@ class Receiver
                                                return;
                                        }
 
-                                       $item['post-type'] = Item::PT_ANNOUNCEMENT;
+                                       $item['post-reason'] = Item::PR_ANNOUNCEMENT;
                                        ActivityPub\Processor::postItem($object_data, $item);
 
                                        $announce_object_data = self::processObject($activity);
@@ -592,7 +606,7 @@ class Receiver
                                break;
 
                        default:
-                               Logger::log('Unknown activity: ' . $type . ' ' . $object_data['object_type'], Logger::DEBUG);
+                               Logger::info('Unknown activity: ' . $type . ' ' . $object_data['object_type']);
                                break;
                }
        }
@@ -603,7 +617,7 @@ class Receiver
         * @param array   $activity
         * @param string  $actor
         * @param array   $tags
-        * @param boolean $fetch_unlisted 
+        * @param boolean $fetch_unlisted
         *
         * @return array with receivers (user id)
         * @throws \Exception
@@ -631,20 +645,22 @@ class Receiver
                }
 
                if (!empty($reply)) {
-                       $parents = Item::select(['uid'], ['uri' => $reply]);
-                       while ($parent = Item::fetch($parents)) {
+                       $parents = Post::select(['uid'], ['uri' => $reply]);
+                       while ($parent = Post::fetch($parents)) {
                                $receivers[$parent['uid']] = ['uid' => $parent['uid'], 'type' => self::TARGET_ANSWER];
                        }
+                       DBA::close($parents);
                }
 
                if (!empty($actor)) {
-                       $profile = APContact::getByURL($actor);
+                       $profile   = APContact::getByURL($actor);
                        $followers = $profile['followers'] ?? '';
-
-                       Logger::log('Actor: ' . $actor . ' - Followers: ' . $followers, Logger::DEBUG);
+                       $is_forum  = ($actor['type'] ?? '') == 'Group';
+                       Logger::info('Got actor and followers', ['actor' => $actor, 'followers' => $followers]);
                } else {
                        Logger::info('Empty actor', ['activity' => $activity]);
                        $followers = '';
+                       $is_forum  = false;
                }
 
                // We have to prevent false follower assumptions upon thread completions
@@ -661,13 +677,13 @@ class Receiver
                                        $receivers[0] = ['uid' => 0, 'type' => self::TARGET_GLOBAL];
                                }
 
-                               // Add receiver "-1" for unlisted posts 
+                               // Add receiver "-1" for unlisted posts
                                if ($fetch_unlisted && ($receiver == self::PUBLIC_COLLECTION) && ($element == 'as:cc')) {
                                        $receivers[-1] = ['uid' => -1, 'type' => self::TARGET_GLOBAL];
                                }
 
                                // Fetch the receivers for the public and the followers collection
-                               if (in_array($receiver, [$followers, self::PUBLIC_COLLECTION]) && !empty($actor)) {
+                               if ((($receiver == $followers) || (($receiver == self::PUBLIC_COLLECTION) && !$is_forum)) && !empty($actor)) {
                                        $receivers = self::getReceiverForActor($actor, $tags, $receivers, $follower_target);
                                        continue;
                                }
@@ -905,16 +921,16 @@ class Receiver
                        $data = ActivityPub::fetchContent($object_id, $uid);
                        if (!empty($data)) {
                                $object = JsonLD::compact($data);
-                               Logger::log('Fetched content for ' . $object_id, Logger::DEBUG);
+                               Logger::info('Fetched content for ' . $object_id);
                        } else {
-                               Logger::log('Empty content for ' . $object_id . ', check if content is available locally.', Logger::DEBUG);
+                               Logger::info('Empty content for ' . $object_id . ', check if content is available locally.');
 
-                               $item = Item::selectFirst([], ['uri' => $object_id]);
+                               $item = Post::selectFirst(Item::DELIVER_FIELDLIST, ['uri' => $object_id]);
                                if (!DBA::isResult($item)) {
-                                       Logger::log('Object with url ' . $object_id . ' was not found locally.', Logger::DEBUG);
+                                       Logger::info('Object with url ' . $object_id . ' was not found locally.');
                                        return false;
                                }
-                               Logger::log('Using already stored item for url ' . $object_id, Logger::DEBUG);
+                               Logger::info('Using already stored item for url ' . $object_id);
                                $data = ActivityPub\Transmitter::createNote($item);
                                $object = JsonLD::compact($data);
                        }
@@ -924,13 +940,13 @@ class Receiver
                                Logger::info('Empty id');
                                return false;
                        }
-       
+
                        if ($id != $object_id) {
                                Logger::info('Fetched id differs from provided id', ['provided' => $object_id, 'fetched' => $id]);
                                return false;
                        }
                } else {
-                       Logger::log('Using original object for url ' . $object_id, Logger::DEBUG);
+                       Logger::info('Using original object for url ' . $object_id);
                }
 
                $type = JsonLD::fetchElement($object, '@type');
@@ -957,10 +973,32 @@ class Receiver
                        return self::fetchObject($object_id, [], false, $uid);
                }
 
-               Logger::log('Unhandled object type: ' . $type, Logger::DEBUG);
+               Logger::info('Unhandled object type: ' . $type);
                return false;
        }
 
+       /**
+        * Converts the language element (Used by Peertube)
+        *
+        * @param array $languages
+        * @return array Languages
+        */
+       public static function processLanguages(array $languages)
+       {
+               if (empty($languages)) {
+                       return [];
+               }
+
+               $language_list = [];
+
+               foreach ($languages as $language) {
+                       if (!empty($language['_:identifier']) && !empty($language['as:name'])) {
+                               $language_list[$language['_:identifier']] = $language['as:name'];
+                       }
+               }
+               return $language_list;
+       }
+
        /**
         * Convert tags from JSON-LD format into a simplified format
         *
@@ -1064,14 +1102,6 @@ class Receiver
                                                'image' => $pageImage,
                                        ];
                                        break;
-                               case 'as:Link':
-                                       $attachlist[] = [
-                                               'type' => str_replace('as:', '', JsonLD::fetchElement($attachment, '@type')),
-                                               'mediaType' => JsonLD::fetchElement($attachment, 'as:mediaType', '@value'),
-                                               'name' => JsonLD::fetchElement($attachment, 'as:name', '@value'),
-                                               'url' => JsonLD::fetchElement($attachment, 'as:href', '@id')
-                                       ];
-                                       break;
                                case 'as:Image':
                                        $mediaType = JsonLD::fetchElement($attachment, 'as:mediaType', '@value');
                                        $imageFullUrl = JsonLD::fetchElement($attachment, 'as:url', '@id');
@@ -1133,7 +1163,10 @@ class Receiver
                                                'type' => str_replace('as:', '', JsonLD::fetchElement($attachment, '@type')),
                                                'mediaType' => JsonLD::fetchElement($attachment, 'as:mediaType', '@value'),
                                                'name' => JsonLD::fetchElement($attachment, 'as:name', '@value'),
-                                               'url' => JsonLD::fetchElement($attachment, 'as:url', '@id')
+                                               'url' => JsonLD::fetchElement($attachment, 'as:url', '@id'),
+                                               'height' => JsonLD::fetchElement($attachment, 'as:height', '@value'),
+                                               'width' => JsonLD::fetchElement($attachment, 'as:width', '@value'),
+                                               'image' => JsonLD::fetchElement($attachment, 'as:image', '@id')
                                        ];
                        }
                }
@@ -1175,30 +1208,60 @@ class Receiver
                return $object_data;
        }
 
+       /**
+        * Extracts a potential alternate URL from a list of additional URL elements
+        *
+        * @param array $urls
+        * @return string
+        */
+       private static function extractAlternateUrl(array $urls): string
+       {
+               $alternateUrl = '';
+               foreach ($urls as $key => $url) {
+                       // Not a list but a single URL element
+                       if (!is_numeric($key)) {
+                               continue;
+                       }
+
+                       if (empty($url['@type']) || ($url['@type'] != 'as:Link')) {
+                               continue;
+                       }
+
+                       $href = JsonLD::fetchElement($url, 'as:href', '@id');
+                       if (empty($href)) {
+                               continue;
+                       }
+
+                       $mediatype = JsonLD::fetchElement($url, 'as:mediaType');
+                       if (empty($mediatype)) {
+                               continue;
+                       }
+
+                       if ($mediatype == 'text/html') {
+                               $alternateUrl = $href;
+                       }
+               }
+
+               return $alternateUrl;
+       }
+
        /**
         * Check if the "as:url" element is an array with multiple links
         * This is the case with audio and video posts.
         * Then the links are added as attachments
         *
-        * @param array $object      The raw object
-        * @param array $object_data The parsed object data for later processing
-        * @return array the object data
+        * @param array $urls The object URL list
+        * @return array an array of attachments
         */
-       private static function processAttachmentUrls(array $object, array $object_data) {
-               // Check if this is some url with multiple links
-               if (empty($object['as:url'])) {
-                       return $object_data;
-               }
-               
-               $urls = $object['as:url'];
-               $keys = array_keys($urls);
-               if (!is_numeric(array_pop($keys))) {
-                       return $object_data;
-               }
-
+       private static function processAttachmentUrls(array $urls): array
+       {
                $attachments = [];
+               foreach ($urls as $key => $url) {
+                       // Not a list but a single URL element
+                       if (!is_numeric($key)) {
+                               continue;
+                       }
 
-               foreach ($urls as $url) {
                        if (empty($url['@type']) || ($url['@type'] != 'as:Link')) {
                                continue;
                        }
@@ -1213,35 +1276,35 @@ class Receiver
                                continue;
                        }
 
-                       if ($mediatype == 'text/html') {
-                               $object_data['alternate-url'] = $href;
-                       }
-
                        $filetype = strtolower(substr($mediatype, 0, strpos($mediatype, '/')));
 
                        if ($filetype == 'audio') {
-                               $attachments[$filetype] = ['type' => $mediatype, 'url' => $href];
+                               $attachments[] = ['type' => $filetype, 'mediaType' => $mediatype, 'url' => $href, 'height' => null, 'size' => null, 'name' => ''];
                        } elseif ($filetype == 'video') {
                                $height = (int)JsonLD::fetchElement($url, 'as:height', '@value');
+                               // PeerTube audio-only track
+                               if ($height === 0) {
+                                       continue;
+                               }
+
+                               $size = (int)JsonLD::fetchElement($url, 'pt:size', '@value');
+                               $attachments[] = ['type' => $filetype, 'mediaType' => $mediatype, 'url' => $href, 'height' => $height, 'size' => $size, 'name' => ''];
+                       } elseif (in_array($mediatype, ['application/x-bittorrent', 'application/x-bittorrent;x-scheme-handler/magnet'])) {
+                               $height = (int)JsonLD::fetchElement($url, 'as:height', '@value');
 
-                               // We save bandwidth by using a moderate height
-                               // Peertube normally uses these heights: 240, 360, 480, 720, 1080
-                               if (!empty($attachments[$filetype]['height']) &&
-                                       (($height > 480) || $height < $attachments[$filetype]['height'])) {
+                               // For Torrent links we always store the highest resolution
+                               if (!empty($attachments[$mediatype]['height']) && ($height < $attachments[$mediatype]['height'])) {
                                        continue;
                                }
 
-                               $attachments[$filetype] = ['type' => $mediatype, 'url' => $href, 'height' => $height];
+                               $attachments[$mediatype] = ['type' => $mediatype, 'mediaType' => $mediatype, 'url' => $href, 'height' => $height, 'size' => null, 'name' => ''];
+                       } elseif ($mediatype == 'application/x-mpegURL') {
+                               // PeerTube exception, actual video link is in the tags of this URL element
+                               $attachments = array_merge($attachments, self::processAttachmentUrls($url['as:tag']));
                        }
                }
 
-               foreach ($attachments as $type => $attachment) {
-                       $object_data['attachments'][] = ['type' => $type,
-                               'mediaType' => $attachment['type'],
-                               'name' => '',
-                               'url' => $attachment['url']];
-               }
-               return $object_data;
+               return array_values($attachments);
        }
 
        /**
@@ -1297,8 +1360,7 @@ class Receiver
                        // Some AP software allow formatted text in post location, so we run all the text converters we have to boil
                        // down to HTML and then finally format to plaintext.
                        $location = Markdown::convert($location);
-                       $location = BBCode::convert($location);
-                       $location = HTML::toPlaintext($location);
+                       $location = BBCode::toPlaintext($location);
                }
 
                $object_data['sc:identifier'] = JsonLD::fetchElement($object, 'sc:identifier', '@value');
@@ -1312,6 +1374,7 @@ class Receiver
                $object_data['name'] = JsonLD::fetchElement($object, 'as:name', '@value');
                $object_data['summary'] = JsonLD::fetchElement($object, 'as:summary', '@value');
                $object_data['content'] = JsonLD::fetchElement($object, 'as:content', '@value');
+               $object_data['mediatype'] = JsonLD::fetchElement($object, 'as:mediaType', '@value');
                $object_data = self::getSource($object, $object_data);
                $object_data['start-time'] = JsonLD::fetchElement($object, 'as:startTime', '@value');
                $object_data['end-time'] = JsonLD::fetchElement($object, 'as:endTime', '@value');
@@ -1322,7 +1385,8 @@ class Receiver
                $object_data['longitude'] = JsonLD::fetchElement($object_data, 'longitude', '@value');
                $object_data['attachments'] = self::processAttachments(JsonLD::fetchElementArray($object, 'as:attachment') ?? []);
                $object_data['tags'] = self::processTags(JsonLD::fetchElementArray($object, 'as:tag') ?? []);
-               $object_data['emojis'] = self::processEmojis(JsonLD::fetchElementArray($object, 'as:tag', 'toot:Emoji') ?? []);
+               $object_data['emojis'] = self::processEmojis(JsonLD::fetchElementArray($object, 'as:tag', null, '@type', 'toot:Emoji') ?? []);
+               $object_data['languages'] = self::processLanguages(JsonLD::fetchElementArray($object, 'sc:inLanguage') ?? []);
                $object_data['generator'] = JsonLD::fetchElement($object, 'as:generator', 'as:name', '@type', 'as:Application');
                $object_data['generator'] = JsonLD::fetchElement($object_data, 'generator', '@value');
                $object_data['alternate-url'] = JsonLD::fetchElement($object, 'as:url', '@id');
@@ -1337,7 +1401,8 @@ class Receiver
                }
 
                if (in_array($object_data['object_type'], ['as:Audio', 'as:Video'])) {
-                       $object_data = self::processAttachmentUrls($object, $object_data);
+                       $object_data['alternate-url'] = self::extractAlternateUrl($object['as:url'] ?? []) ?: $object_data['alternate-url'];
+                       $object_data['attachments'] = array_merge($object_data['attachments'], self::processAttachmentUrls($object['as:url'] ?? []));
                }
 
                $receiverdata = self::getReceivers($object, $object_data['actor'], $object_data['tags'], true);